The potential analysis of food waste management using bioconversion of the organic waste by the black soldier fly (Hermetia illucens) larvae in the cafeteria of the faculty of engineering, universitas Indonesia

Research output: Contribution to journalArticle

Abstract

The majority of waste made in Indonesia fall into the organic category which amounts to 58%. The Cafeteria of The Faculty of Engineering, Universitas Indonesia (FT UI) is one of the highest contributors of organic waste. The food waste management that was done is only limited to composting, which takes around 6-7 weeks. One of the alternatives that could be used for food waste management is bioconversion which uses the larvae of black soldier fly (Hermetia illucens). The purpose of this study are: to obtain the knowledge regarding the amount of FT UI Cafeteria’s organic waste generation, analyze the ideal duration of the bioconversion, and analyze the bioconversion potential from organic waste. The bioconversion container that is used is a rectangular-shaped 9.6 L plastic container with the size of 32 x 25 x 12 cm. This container was chosen based on the assumption that every container will be filled with 1 kg of substrate with its height no higher than 5 cm or the highest amount of substrate. The height of the substrate was obtained by comparing the container volume with the waste density that will be used as the substrate. The first step of this study was done in the laboratory scale which uses 4 variations of the bioconversion duration which are 7, 14, 21, and 28 days. The ideal bioconversion duration that was obtained from the second phase of the study which aims to obtain empirical evidence regarding the waste management potential in the existing scale. The results showed that there is an average of 46.27 kg of waste generation per day which consists of 87% or 40.45 kg of low-cellulose organic waste which can be used as a bioconversion substrate with a density of 0.94 kg/L. From 4 variation of the duration bioconversion, the ideal duration are 12 days. As for the existing waste management potential, the bioconversion could reduce the waste as much as 75% with a WRI of 6.25% per day and also could produce the larva biomass of about 800 grams per 4 kg of waste. Another parameters, the ECD rate is 26.67%, the RGR is 8.29% per day and the RSR rate is 82.23%. Moreover, after the bioconversion, the larvae contain 29.1% protein and 11.86% fat.

Original languageEnglish
Pages (from-to)61-66
Number of pages6
JournalEvergreen
Volume7
Issue number1
DOIs
Publication statusPublished - Mar 2020

Keywords

  • Bioconversion
  • Black soldier fly
  • Food waste
  • Hermetia Illucens
  • Organic waste

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